William j



(No Model.)

w. J. 0. DOYLE.

FUSE IGNITDR.

No. 481,012. Patented Aug. 16, 1892.

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ihvrrnn STATES PATENT Fries.

\VILLIAM J. O. DOYLE, OF ASPEN, COLORADO, ASSIGNOR OF ONE-HALF TOTIMOTHY BUOKLEY, OF SAME PLACE.

FUSE-IGNITOR.

SPECIFICATION forming part of Letters Patent No. 481,012, dated August16, 1892.

Application filed December 29, 1891. Serial No. 416,467. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM J. C. DOYLE, of Aspen, in the county ofPitkin and State of Colorado, have invented a new and ImprovedFuse-lgnitor, of which the following is a full, clear, and exactdescription.

My invention relates to improvements in fuse-ignitors. It is well knownthat in blasting it is a common practice to fire a number of fuses andcharges simultaneously, and this is usually a dangerous operation, ascertain of the fuses are likely to miss fire, and in that case they maygo 05 accidentally after the danger is supposed to have passed.

The object of my invention is to producea simple device by means ofwhich any number of fuses may be safely held and simulta neously fired,so that there will be no chance of a miss-fire, and also to produce adevice of the character described which is very simple and cheap andwhich may be used either in wet or dry blasting.

To this end my invention consists in a fuseignitor, the construction ofwhich will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar figures of reference indicatecorresponding parts in all the views.

Figure 1 is a perspective view of the device in open position. Fig. 2 isabroken plan view of the same with the fuses therein, the fuses beingplaced in position for firing; and Fig. 3 is a front elevation of thedevice.

The body of the ignitor consists of two similar block-like pieces 10 and11, which must correspond in shape, but which may be of any desiredshape, and these members 10 and 11 are hinged together, as shown at 12,so that they may be folded one upon the other, as in Figs. 2 and 8. Theparts are provided with an ordinary fastening 13, by means of which theymay be held together. On three sides of the inner face of the part 10are short semi-cylindrical grooves 14, which extend to the edges of thebody, and on the opposite part 11 are similar grooves 14 which when theparts 10 and 11 are closed together register with the grooves 14, asshown in Fig. 3, and the two grooves thus fit closely upon the fuse.

In the back portion of the members 10 and 11 are registering grooves 15and 15, which are adapted to hold the fuse by which the others arefired, as hereinafter described, and the groove 15 connectswith theseveral grooves 14 by small branch grooves 16, as best shown in Fig. 1,which grooves are adapted to contain fine powder, so as to convey firefrom the groove 15 to the grooves 14, and, if desired, ordinary blackpowder may be mixed damp, so as to form a paste, and molded into thesegrooves 16 and allowed to dry, so that it will be held firmly in placeand will not be likely to spill.

It will be understood that the fuse-holding grooves 14 and 14 may bemade of any desired length within the limits of the body and that agreater or less number may be used than is shown in the drawings.

WVhen the device is used, the fuses 17, which lead to the variouscharges to be exploded, are fastened in the grooves 14 14 the powder 18is inserted in the grooves 16, a short fuse 19 is inserted in thegrooves 15 15, and the members 10 and 11 are firmly fastened together bythe fastening 13. If the device is to be used for wet blasting, theedges of the body members 10 and 11 may be first smeared withcartridge-soap, so as to effect a water-tight joint.

It will be understood that the fuses 17 may be of any length to adjustthem to the dif ferent distances of the charges with which they connect,and when the fuse 19 is lighted the fire will be conveyed by means ofthe powder 18 to the several fuses 17 and the charges connected withsaid fuses will be exploded.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A fuse-ignitor comprising a two-part body havingregistering grooves therein adapted to hold fuses, branch groovesconnecting the fuse-holding grooves, and a fastening device tohold theparts of the body toand branch grooves connecting the fuse-holdgether,substantially as described.

ing grooves, substantially as described. 2. A fuse-i nitor comprisin atwo-part 1 7 body, the menibers of which are hinged to- WILLIAM D01gether and provided with a suitable fastcn- Vitnesses:

ing, a series of fuse-holding grooves produced JAs. A. DONEGAN, in thebody and extending to the sides thereof, H. L. MCNAIR.

